CN107649847B - A kind of processing method of the ultra-narrow undercut herringbone gear suitable for high-speed overload machinery - Google Patents
A kind of processing method of the ultra-narrow undercut herringbone gear suitable for high-speed overload machinery Download PDFInfo
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- CN107649847B CN107649847B CN201711079055.6A CN201711079055A CN107649847B CN 107649847 B CN107649847 B CN 107649847B CN 201711079055 A CN201711079055 A CN 201711079055A CN 107649847 B CN107649847 B CN 107649847B
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- herringbone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F7/00—Making herringbone gear teeth
Abstract
The invention discloses a kind of processing methods of ultra-narrow undercut herringbone gear suitable for high-speed overload machinery, first in herringbone gear middle section turnery processing undercut, then the gear shaping roughing herringbone gear two sides gear teeth then carry out Surface heat-treatent carburizing intensive treatment to the gear teeth.It is applicable in dish (emery) wheel and carries out the processing of gear teeth accurate grinding, finger-like grinding wheel is used instead for the gear teeth close to undercut part and carries out accurate grinding processing.The features such as ultra-narrow undercut herringbone gear of the invention, which compares traditional herringbone gear, has narrower undercut, and bearing capacity is bigger, and it is longer to engage effective contact line, more compact structure.The high-speed overload operating condition required for ship and aviation transmission system is especially suitable.
Description
Technical field
The present invention relates to the technical fields of the processing of herringbone gear, and in particular to a kind of mechanical suitable for high-speed overload
The processing method of ultra-narrow undercut herringbone gear.
Background technique
Since traditional herringbone gear must there are undercut realizes in Grinding Process that dish (emery) wheel is transported in feeding
The knife that allows in stroke is moved, biggish undercut directly results in the herringbone gear facewidth and becomes larger, gear volume, weight increase etc. one
Series of problems.Especially in the case where some transmission case body volumes are limited, the whole facewidth of herringbone gear is limited, big sky knife
The presence of slot directly results in the reduction of the two sides gear teeth facewidth, so that gear path of contact shortens, stress concentration is convex in engagement process
It is aobvious, directly reduce mechanical property and the service life of herringbone gear.
Summary of the invention
The purpose of the present invention is to propose to a kind of processing of ultra-narrow undercut herringbone gear suitable for high-speed overload machinery
Method realizes the grinding of ultra-narrow undercut, has the seldom of undercut herringbone gear processing method change compared to traditional
But undercut width has obtained apparent reduction.
The technical solution adopted by the present invention are as follows: a kind of ultra-narrow undercut herringbone gear suitable for high-speed overload machinery
Processing method, it is characterised in that: the following steps are included:
Step 1, stock, forge workpiece；
Step 2, two end faces for processing herringbone gear form datum plane, planarity requirements 0.01；
Step 3, the calculated value according to this processing method process the undercut of herringbone gear, groove width b；
Step 4, slotting roughing carry out slotting roughing to herringbone gear using generating principle；
Step 5 carries out roughing detection, Gear shape process surplus 1mm；
Step 6 coats non-gear tooth portions antiseepage carbon-coating, then carries out carburizing heat treatment；
Step 7 detects flank of tooth heat treatment hardness and carburized (case) depth, in order to use the operating condition ring of high-speed overload
Border, it is desirable that carburized (case) depth 1mm, tooth face hardness HRC60-62；
The coating of chemical treatment removal anti-carburizi ng is carried out after the completion of step 8, heat treatment to gear；
Step 9 carries out accurate grinding grinding wheel to the herringbone gear after heat treatment using dish (emery) wheel, and grinding area is
AA1, BB1Section；The position of A point is in the external gear teeth endface of each unilateral tooth of herringbone gear, A1The position of point is in herringbone gear
At the close interior gear teeth end face of each unilateral side tooth, the position of B point is in the external gear teeth endface of each unilateral tooth of herringbone gear, B1
The position of point is in each unilateral tooth of herringbone gear at interior gear teeth end face, and dish (emery) wheel is from gear teeth end face along teeth directional side
To from A point toward A1Point movement, when the side of dish (emery) wheel is moved to gear mid-plane, grinding wheel stop motion, sand at this time
It is exactly A that it is corresponding, which to take turns rotation center,1Point；Grinding area BB1It is also that similarly, grinding wheel is from B point to B1Point movement, when dish (emery) wheel
When side is moved to gear mid-plane, grinding wheel stop motion, it is exactly B that grinding wheel rotation center is corresponding at this time1Point；
Step 10, switching use finger-like forming grinding wheel cutter, and switching front and back keeps the rotation axis of finger-like grinding wheel in butterfly
In the mid-plane of grinding wheel；
Step 11, using finger-like forming grinding wheel to the A of herringbone gear1C、B1The D sections of gear teeth carry out accurate grinding processing, C point
Position at the interior gear teeth end face of each unilateral tooth of herringbone gear, the position of D point is in each unilateral tooth of herringbone gear
At interior gear teeth end face；A among herringbone gear1C and B1The part of the part D, the i.e. flank of tooth without butterfly grinding, finger-like molding
Grinding wheel parameter determines by gear parameter, A1Position determined by dish (emery) wheel radius, B1Position determined by finger-like forming grinding wheel radius
It is fixed；When carrying out grinding using finger-like forming grinding wheel, respectively from the A of the gear teeth1And B1Position is along teeth directional direction among gear
Flat surface grinding processing, is off when finger-like forming grinding wheel side moves to mid-plane；
Step 12 examines each dimensional machining accuracy, completes processing.
Wherein, it chooses forging workpiece as stocking up in step 1, two end faces is first processed in step 2 and form datum planes,
Planarity requirements 0.01, two face acted as reference mutual, the depth of parallelism require 0.02.
The undercut width x of ultra-narrow undercut herringbone gear of the invention is similarly subjected to the influence of number of gear teeth but gets rid of
The constraint of dish (emery) wheel, circular are as follows:
Wherein,For addendum coefficient, c*For tip clearance coefficient, mnFor normal module, α is that milling cutter processing does not interfere
Minimum dimension.
The present invention has the advantage that compared with tradition has undercut herringbone gear processing technology
Theoretically reduce the size of undercut, simultaneous processing technique does not become excessively complicated, have it is very high can
Row.In the case of the identical facewidth, the contact line length of gear is expanded, engagement situation is improved, improves transmission performance.
Detailed description of the invention
Fig. 1 is ultra-narrow undercut herringbone gear schematic diagram of the invention；
Fig. 2 is the schematic diagram that herringbone gear is processed using dish (emery) wheel；
Fig. 3 is the schematic diagram that herringbone gear is processed using finger-like grinding wheel.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
A kind of processing method of the ultra-narrow undercut herringbone gear suitable for high-speed overload machinery of the present invention, including it is following
Step:
Step 1, stock, forge workpiece；
Wherein, choose forging workpiece as stock in step 1, in order to make herringbone gear be more suitable for high-speed overload
Mechanical equipment, material preferentially select 18CrNi4A, the steel material such as 9310 steel, and blank selects solid forging machine-shaping.
Step 2, two end faces for processing herringbone gear form datum plane, planarity requirements 0.01；
Wherein, two end faces are first processed in step 2 forms datum planes, planarity requirements 0.01, two face acted as reference mutual,
The depth of parallelism requires 0.02.
Step 3, the calculated value according to this processing method process the undercut of herringbone gear, groove width b；
Groove depth is 1.1 times of fully teeth heights, two Edge Blends of undercut, chamfering radius 1mm.In order to make lubricating oil in undercut
Flow more smooth, undercut needs periodic cleaning in use.
Step 4, slotting roughing carry out slotting roughing to herringbone gear using generating principle；
Using gear shapping machine slotting roughing, slotting tool preferentially select with the same equal modulus of herringbone gear, the number of teeth, pressure angle insert
Serrated knife carries out shaping using 1:1 transmission ratio.When one side gear of slotting, slotting tool and gear stop operating, slotting tool top from
The A point shaping of gear stops to C point, then from C point push broach to A point.After slotting tool exits gear completely, slotting tool and gear are simultaneously
Equal angular is rotated, slotting tool and gear are simultaneously stopped, and slotting tool carries out shaping again.And so on, slotting roughing is completed.
Step 5 carries out roughing detection, Gear shape process surplus 1mm；
Roughing detection, predominantly detects the surplus of transverse tooth thickness, C, D two o'clock to moderate situation on the inside of the gear teeth of two sides.According to tooth
Face machining allowance and the gear teeth determine finishing parameter to moderate situation.
Step 6 coats non-gear tooth portions antiseepage carbon-coating, then carries out carburizing heat treatment；
Non- gear tooth portions mainly include that the both sides of the face of herringbone gear and intermediate undercut part, antiseepage carbon-coating use oxygen
Change aluminium and add waterglass, carburizing heat treatment uses gas carburizing, and at 900-920 DEG C, carburizing time is controlled 120 for carburizing temperature control
Hour.
Step 7 detects flank of tooth heat treatment hardness and carburized (case) depth, in order to use the operating condition ring of high-speed overload
Border, it is desirable that carburized (case) depth 1mm, tooth face hardness HRC60-62；
The coating of chemical treatment removal anti-carburizi ng is carried out after the completion of step 8, heat treatment to gear；
It removes anti-carburizi ng coating and uses chemical cleaning method, using salt acid soak, at 10-15 minutes, room temperature soaked for time control
Bubble, then removal brushes away coating with brush.
Step 9 carries out accurate grinding grinding wheel to the herringbone gear after heat treatment using dish (emery) wheel, as shown in Fig. 2, mill
Cutting region is mainly AA1,BB1；The position of A point is in the external gear teeth endface of each unilateral tooth of herringbone gear, A1The position of point exists
The each unilateral tooth of herringbone gear at interior gear teeth end face, the foreign steamer of the position of B point in each unilateral tooth of herringbone gear
Tooth endface, B1The position of point is in each unilateral tooth of herringbone gear at interior gear teeth end face, and dish (emery) wheel is from gear teeth end
Face is along teeth directional direction to from A point toward A1Point movement, when the side of dish (emery) wheel is moved to gear mid-plane, grinding wheel stops
Movement, it is exactly A that grinding wheel rotation center is corresponding at this time1Point；Grinding area BB1It is also that similarly, grinding wheel is from B point to B1Point movement, when
When the side of dish (emery) wheel is moved to gear mid-plane, grinding wheel stop motion, it is exactly B that grinding wheel rotation center is corresponding at this time1
Point.
Step 10, switching use finger-like wheel cutter, and switching front and back keeps the rotation axis of finger-like grinding wheel in dish (emery) wheel
Mid-plane in；
Step 11, using finger-like grinding wheel to the A of herringbone gear1C、B1The D sections of gear teeth carry out accurate grinding processing；The position of C point
It sets at the interior gear teeth end face of each unilateral tooth of herringbone gear, the lubrication groove of the position of D point in each unilateral tooth of herringbone gear
Tooth endface；A among herringbone gear1C and B1The part of the part D, the i.e. flank of tooth without butterfly grinding, finger-like forming grinding wheel
Parameter determines by gear parameter, A1Position determined by dish (emery) wheel radius, B1Position determined by finger-like forming grinding wheel radius；
When carrying out grinding using finger-like forming grinding wheel, respectively from the A of the gear teeth1And B1Position is flat among gear along teeth directional direction
Face grinding is off when finger-like forming grinding wheel side moves to mid-plane；
Step 12 examines each dimensional machining accuracy, completes processing.
Predominantly detect Gear shape process surplus, the two sides gear teeth C, D point to moderate, flank of tooth Accumulated deviation and gear teeth precision.
Claims (1)
1. a kind of processing method of the ultra-narrow undercut herringbone gear suitable for high-speed overload machinery, it is characterised in that: including
Following steps:
Step 1, stock, forge workpiece；
Step 2, two end faces for processing herringbone gear form datum plane, planarity requirements 0.01；
Step 3, the calculated value according to this processing method process the undercut of herringbone gear, groove width b；
Step 4, slotting roughing carry out slotting roughing to herringbone gear using generating principle；
Step 5 carries out roughing detection, Gear shape process surplus 1mm；
Step 6 coats non-gear tooth portions antiseepage carbon-coating, then carries out carburizing heat treatment；
Step 7 detects flank of tooth heat treatment hardness and carburized (case) depth, in order to use the work condition environment of high-speed overload,
Ask carburized (case) depth 1mm, tooth face hardness HRC60-62；
The coating of chemical treatment removal anti-carburizi ng is carried out after the completion of step 8, heat treatment to gear；
Step 9 carries out accurate grinding grinding wheel to the herringbone gear after heat treatment using dish (emery) wheel, and grinding area is AA1, BB1
Section；The position of A point is in the external gear teeth endface of each unilateral tooth of herringbone gear, A1The position of point is in each list of herringbone gear
At the close interior gear teeth end face of side tooth, the position of B point is in the external gear teeth endface of each unilateral tooth of herringbone gear, B1The position of point
Set in each unilateral tooth of herringbone gear at interior gear teeth end face, dish (emery) wheel from gear teeth end face along teeth directional direction to by
A point is toward A1Point movement, when the side of dish (emery) wheel is moved to gear mid-plane, grinding wheel stop motion, grinding wheel rotates at this time
Corresponding center is exactly A1Point；Grinding area BB1It is also that similarly, grinding wheel is from B point to B1Point movement, when a sidesway of dish (emery) wheel
When moving gear mid-plane, grinding wheel stop motion, it is exactly B that grinding wheel rotation center is corresponding at this time1Point；
Step 10, switching use finger-like forming grinding wheel cutter, and switching front and back keeps the rotation axis of finger-like grinding wheel in dish (emery) wheel
Mid-plane in；
Step 11, using finger-like forming grinding wheel to the A of herringbone gear1C、B1The D sections of gear teeth carry out accurate grinding processing, the position of C point
It sets at the interior gear teeth end face of each unilateral tooth of herringbone gear, the lubrication groove of the position of D point in each unilateral tooth of herringbone gear
Tooth endface；A among herringbone gear1C and B1The part of the part D, the i.e. flank of tooth without butterfly grinding, finger-like forming grinding wheel
Parameter determines by gear parameter, A1Position determined by dish (emery) wheel radius, B1Position determined by finger-like forming grinding wheel radius；
When carrying out grinding using finger-like forming grinding wheel, respectively from the A of the gear teeth1And B1Position is flat among gear along teeth directional direction
Face grinding is off when finger-like forming grinding wheel side moves to mid-plane；
Step 12 examines each dimensional machining accuracy, completes processing；
It chooses forging workpiece as stocking up in step 1, two end faces is first processed in step 2 and form datum planes, flatness is wanted
0.01 is asked, two face acted as reference mutual, the depth of parallelism requires 0.02；
The undercut width x of ultra-narrow undercut herringbone gear is similarly subjected to the influence of number of gear teeth but gets rid of dish (emery) wheel
Constraint, circular are as follows:
Wherein,For addendum coefficient, c*For tip clearance coefficient, mnFor normal module, a is that milling cutter processes the minimum not interfered
Size；
This approach reduce the size of undercut, simultaneous processing technique does not become excessively complicated, has very high feasibility；Phase
In the case of the facewidth, the contact line length of gear is expanded, engagement situation is improved, improves transmission performance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711079055.6A CN107649847B (en) | 2017-11-06 | 2017-11-06 | A kind of processing method of the ultra-narrow undercut herringbone gear suitable for high-speed overload machinery |
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| CN201711079055.6A CN107649847B (en) | 2017-11-06 | 2017-11-06 | A kind of processing method of the ultra-narrow undercut herringbone gear suitable for high-speed overload machinery |
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| CN107649847A CN107649847A (en) | 2018-02-02 |
| CN107649847B true CN107649847B (en) | 2019-08-30 |
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| DE102017011276A1 (en) * | 2017-12-07 | 2019-06-13 | Rolls-Royce Deutschland Ltd & Co Kg | Method for producing a gear |
| DE102018128556B4 (en) * | 2018-11-14 | 2020-08-27 | Präwema Antriebstechnik GmbH | Process for the machining of a gear provided with double helical teeth |
| CN111687494B (en) * | 2020-05-25 | 2021-11-19 | 西安交通大学 | Method for generating and processing zero-degree rack of herringbone gear with narrow clearance groove |
| CN114453678B (en) * | 2021-12-24 | 2023-10-24 | 中国航发哈尔滨东安发动机有限公司 | Maximum diameter determining method for grinding wheel for grinding centering herringbone gear |
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| CN101526129A (en) * | 2009-02-27 | 2009-09-09 | 南京航空航天大学 | Helical involute gear and processing method thereof |
| CN101804548A (en) * | 2010-04-15 | 2010-08-18 | 南通振华重型装备制造有限公司 | Manufacturing method of integral herringbone gear shaft |
| CN104819266A (en) * | 2015-05-12 | 2015-08-05 | 西安工业大学 | Arc spiral line mixed herringbone gear without tool withdrawal groove and processing method thereof |
| CN105729076A (en) * | 2014-12-09 | 2016-07-06 | 重庆凌云工具有限公司 | Machining method for duplicate gear |
| WO2017136263A1 (en) * | 2016-02-03 | 2017-08-10 | Sikorsky Aircraft Corporation | Advanced herringbone gear design |
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2017
- 2017-11-06 CN CN201711079055.6A patent/CN107649847B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526129A (en) * | 2009-02-27 | 2009-09-09 | 南京航空航天大学 | Helical involute gear and processing method thereof |
| CN101804548A (en) * | 2010-04-15 | 2010-08-18 | 南通振华重型装备制造有限公司 | Manufacturing method of integral herringbone gear shaft |
| CN105729076A (en) * | 2014-12-09 | 2016-07-06 | 重庆凌云工具有限公司 | Machining method for duplicate gear |
| CN104819266A (en) * | 2015-05-12 | 2015-08-05 | 西安工业大学 | Arc spiral line mixed herringbone gear without tool withdrawal groove and processing method thereof |
| WO2017136263A1 (en) * | 2016-02-03 | 2017-08-10 | Sikorsky Aircraft Corporation | Advanced herringbone gear design |
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